Now such like words or deeds wherein nothing further is sought than the soul's delight, are called playful or humorous. Hence it is necessary at times to make use of them, in order to give rest, as it were, to the soul. This is in agreement with the statement of the Philosopher (Ethic. iv, 8) that "in the intercourse of this life there is a kind of rest that is associated with games": and consequently it is sometimes necessary to make use of such things.
Nevertheless it would seem that in this matter there are three points which require especial caution. The first and chief is that the pleasure in question should not be sought in indecent or injurious deeds or words. Wherefore Tully says (De Offic. i, 29) that "one kind of joke is discourteous, insolent, scandalous, obscene." Another thing to be observed is that one lose not the balance of one's mind altogether. Hence Ambrose says (De Offic. i, 20): "We should beware lest, when we seek relaxation of mind, we destroy all that harmony which is the concord of good works": and Tully says (De Offic. i, 29), that, "just as we do not allow children to enjoy absolute freedom in their games, but only that which is consistent with good behavior, so our very fun should reflect something of an upright mind." Thirdly, we must be careful, as in all other human actions, to conform ourselves to persons, time, and place, and take due account of other circumstances, so that our fun "befit the hour and the man," as Tully says (De Offic. i, 29).
Now these things are directed according to the rule of reason: and a habit that operates according to reason is virtue. Therefore there can be a virtue about games. The Philosopher gives it the name of wittiness (eutrapelia), and a man is said to be pleasant through having a happy turn* of mind, whereby he gives his words and deeds a cheerful turn: and inasmuch as this virtue restrains a man from immoderate fun, it is comprised under modesty. [*Eutrapelia is derived from trepein = "to turn">[.
Reply Obj. 1: As stated above, fun should fit with business and persons; wherefore Tully says (De Invent. Rhet. i, 17) that "when the audience is weary, it will be useful for the speaker to try something novel or amusing, provided that joking be not incompatible with the gravity of the subject." Now the sacred doctrine is concerned with things of the greatest moment, according to Prov. 8:6, "Hear, for I will speak of great things." Wherefore Ambrose does not altogether exclude fun from human speech, but from the sacred doctrine; hence he begins by saying: "Although jokes are at times fitting and pleasant, nevertheless they are incompatible with the ecclesiastical rule; since how can we have recourse to things which are not to be found in Holy Writ?"
Reply Obj. 2: This saying of Chrysostom refers to the inordinate use of fun, especially by those who make the pleasure of games their end; of whom it is written (Wis. 15:12): "They have accounted our life a pastime." Against these Tully says (De Offic. i, 29): "We are so begotten by nature that we appear to be made not for play and fun, but rather for hardships, and for occupations of greater gravity and moment."
Reply Obj. 3: Playful actions themselves considered in their species are not directed to an end: but the pleasure derived from such actions is directed to the recreation and rest of the soul, and accordingly if this be done with moderation, it is lawful to make use of fun. Hence Tully says (De Offic. i, 29): "It is indeed lawful to make use of play and fun, but in the same way as we have recourse to sleep and other kinds of rest, then only when we have done our duty by grave and serious matters." _______________________
THIRD ARTICLE [II-II, Q. 168, Art. 3]
Whether There Can Be Sin in the Excess of Play?
Objection 1: It would seem that there cannot be sin in the excess of play. For that which is an excuse for sin is not held to be sinful. Now play is sometimes an excuse for sin, for many things would be grave sins if they were done seriously, whereas if they be done in fun, are either no sin or but slightly sinful. Therefore it seems that there is no sin in excessive play.
Obj. 2: Further, all other vices are reducible to the seven capital vices, as Gregory states (Moral. xxxi, 17). But excess of play does not seem reducible to any of the capital vices. Therefore it would seem not to be a sin.